You were committed to what you were talking about...(Para. 5)
be committed to: spend one's time, attention or energy on sth.
He is very committed to the cause of language teaching. 他对于语言教学事业十分投入。
If you want to become an actor, you really have to commit yourself to it. 要是你想成为一名演员，就得全身心地投入。